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Common pills, plastics making male fish lay eggs.


Washington, Oct 11 (ANI): Plastics, pesticides and even common prescription drugs are releasing synthetic and natural hormones into rivers and streams, which is leading to unintended consequences For the "Law of unintended consequences", see Unintended consequence

Unintended Consequences is a novel by author John Ross, first published in 1996 by Accurate Press.
 on wildlife, causing some male fish to become feminised and lay eggs.

In a recent report, it was found that one third of small mouth bass were feminised in nine major U.S. river basins, and almost all of the rivers and streams tested in the United States United States, officially United States of America, republic (2005 est. pop. 295,734,000), 3,539,227 sq mi (9,166,598 sq km), North America. The United States is the world's third largest country in population and the fourth largest country in area.  contained some hormonally active chemicals.

And now in a conference, the researchers are focussing on the long-term consequences of hormones and endocrine disruptors in the environment.

"It is one of the hottest topics in environmental biology right now. The biological activity of these compounds both in terms of other species and, potentially, ourselves is something that scientists are becoming more and more aware of through research," said Dr. John McLachlan, director of the Tulane/Xavier Center for Bioenvironmental bi·o·en·vi·ron·men·tal  
adj.
Having to do with the relationship between the environment and living organisms: Bioenvironmental engineers are studying the effects of toxic chemicals on life in the area. 
 Research, which is hosting the conference.

Now scientists are looking at the proliferation of prescription drugs like antidepressants Antidepressants
Medications prescribed to relieve major depression. Classes of antidepressants include selective serotonin reuptake inhibitors (fluoxetine/Prozac, sertraline/Zoloft), tricyclics (amitriptyline/ Elavil), MAOIs (phenelzine/Nardil), and heterocyclics
, contraceptives and other medications that are ending up in wastewater after being taken by people.

Most municipal water treatment systems don't have the ability to neutralize pharmaceutical compounds in wastewater so they end up in rivers and streams, said McLachlan.

"They all end up in different places in the environment. What do they do to the wildlife that absorb them and, more importantly, what do they do to our water sources?" he says.

A recent study found feminised male fish in almost a third of 111 sampling sites in nine major U.S. river basins and scientists are studying whether endocrine disruptors are responsible.

Tyron Hayes, a leading expert in intersexed amphibians amphibians

members of the animal class Amphibia. Includes frogs, toads, newts, salamanders and cecilians all capable of living on land or in water.
, will be speaking at the conference about his research on the effects of endocrine disruptors on wildlife.

The conference also discusses how hormones affect the body and endocrine system endocrine system (ĕn`dəkrĭn), body control system composed of a group of glands that maintain a stable internal environment by producing chemical regulatory substances called hormones.  and how they may play a role in diseases like breast cancer.

The findings will be discussed in the Tenth International Symposium on Environment and Hormones (E.hormone 2009). (ANI)

Copyright 2009 Asian News International The Asian News International (ANI) agency provides multimedia news to China and 50 bureaus in India. It covers virtually all of South Asia since its foundation and presently claims, on its official website, to be the leading South Asia-wide news agency.  (ANI) - All Rights Reserved.

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Publication:Asian News International
Date:Oct 12, 2009
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